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He experimented with sending and receiving electrical waves wirelessly -
marconi sends the first radio signal
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the audio tube was invented to boost the radios signal -
kdka was the first radio station was made in Pittsburgh -
The Federal Radio Commissions, later called the FCC, was made to clear up the radio waves -
the first commercial was for an apartment complex
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from the 1930s to 1940s radio was used to entertain people -
tv was made and so they started putting music on radios -
Edwin Armstrong creates FM radio to allow high dynamic range of music